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  <meta content="2018-10-23T06:18:10.521000000" name="created"/>
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   <!-- Value propagation -->
   价值传播
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   <h1>
    <!-- Value propagation -->
    价值传播
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   <p>
    <!-- Logisim's algorithm for simulating the propagation of values through circuits is not something that you normally need to worry about. Suffice it to say that the algorithm is sophisticated enough to account for gate delays, but not realistic enough to account for more difficult phenomena like varying voltages or race conditions. -->
    Logisim-evolution 的模拟值通过电路传播的算法通常不需要担心。 可以说，该算法足够复杂，可以解释门延迟，但不够现实，无法解释更困难的现象，例如变化的电压或竞争条件。
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    <!-- <a href="delays.html">Gate delays</a><br> -->
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     登机口延误
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    <!-- <a href="oscillate.html">Oscillation errors</a><br> -->
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     振荡错误
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     缺点
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    <img alt="propagation" class="notscal" src="../../../../img-guide/propagation.png"/>
    <br/>
    SN7400 data sheet
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     下一步：
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     登机口延迟
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    。
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